Question about Honeywell CT87B ROUND HEATING&COOLING MECHANICAL THERMOSTAT - WHITE Heater

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It is in the 30s here at night and I've begun using my heat for the first time (just moved in this summer). I keep turning up the heat (it is currently maxed out at 90 degrees), but there thermostat temperature won't climb higher than 73 degrees. I've had to bring in a small heater to stay warm in here. Any suggestions?

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  • 89 Answers

Is there HOLD button?

Posted on Dec 06, 2013

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6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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heatman101
  • 43501 Answers

SOURCE: Honeywell RTH2310 thermostat temp variance

Hi,
Yes you can change that by change the number of cycles per hour that your t-stat looks from for youe furnace. Lower the cycles per hour number and it will increase the range.

You can see how to do it here

http://dl.owneriq.net/3/39359643-dfda-451d-bb81-828eecddd9fc.pdf

I hope that this will help you to solve your problem!

Thanks for using Fixya!!

Heatman101

Posted on Dec 12, 2009

  • 472 Answers

SOURCE: my robertshaw thermostat works well

what it sounds like happening is the unit is realizing it is falling behind most thermostat s have a 3 degree deadband if they fall 3 degrees or more at a time after running for so long then it will bring on the emergency heat which is located in your inside unit... when it gets really colds and you see this you need to go outside and look is the outside unit still running and is it freezing up on you...also if running check the larger of two pipes make sure the large pipe is hot to touch...based on the description you have given the thermostat is calling for emergency heat but for some reason is not bringing it on or there is a problem with the emergency heat.... hope this helps out some
repost with any additional questions...

Posted on Jan 08, 2011

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